| /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for | |
| * full list of contributors). Published under the Clear BSD license. | |
| * See http://svn.openlayers.org/trunk/openlayers/license.txt for the | |
| * full text of the license. */ | |
| /** | |
| * @requires OpenLayers/Protocol.js | |
| */ | |
| /** | |
| * Class: OpenLayers.Protocol.SQL | |
| * Abstract SQL protocol class. Not to be instantiated directly. Use | |
| * one of the SQL protocol subclasses instead. | |
| * | |
| * Inherits from: | |
| * - <OpenLayers.Protocol> | |
| */ | |
| OpenLayers.Protocol.SQL = OpenLayers.Class(OpenLayers.Protocol, { | |
| /** | |
| * APIProperty: databaseName | |
| * {String} | |
| */ | |
| databaseName: 'ol', | |
| /** | |
| * APIProperty: tableName | |
| * Name of the database table into which Features should be saved. | |
| */ | |
| tableName: "ol_vector_features", | |
| /** | |
| * Property: postReadFiltering | |
| * {Boolean} Whether the filter (if there's one) must be applied after | |
| * the features have been read from the database; for example the | |
| * BBOX strategy passes the read method a BBOX spatial filter, if | |
| * postReadFiltering is true every feature read from the database | |
| * will go through the BBOX spatial filter, which can be costly; | |
| * defaults to true. | |
| */ | |
| postReadFiltering: true, | |
| /** | |
| * Constructor: OpenLayers.Protocol.SQL | |
| */ | |
| initialize: function(options) { | |
| OpenLayers.Protocol.prototype.initialize.apply(this, [options]); | |
| }, | |
| /** | |
| * APIMethod: destroy | |
| * Clean up the protocol. | |
| */ | |
| destroy: function() { | |
| OpenLayers.Protocol.prototype.destroy.apply(this); | |
| }, | |
| /** | |
| * APIMethod: supported | |
| * This should be overridden by specific subclasses | |
| * | |
| * Returns: | |
| * {Boolean} Whether or not the browser supports the SQL backend | |
| */ | |
| supported: function() { | |
| return false; | |
| }, | |
| /** | |
| * Method: evaluateFilter | |
| * If postReadFiltering is true evaluate the filter against the feature | |
| * and return the result of the evaluation, otherwise return true. | |
| * | |
| * Parameters: | |
| * {<OpenLayers.Feature.Vector>} The feature. | |
| * {<OpenLayers.Filter>} The filter. | |
| * | |
| * Returns: | |
| * {Boolean} true if postReadFiltering if false, the result of the | |
| * filter evaluation otherwise. | |
| */ | |
| evaluateFilter: function(feature, filter) { | |
| return filter && this.postReadFiltering ? | |
| filter.evaluate(feature) : true; | |
| }, | |
| CLASS_NAME: "OpenLayers.Protocol.SQL" | |
| }); | |